Quiet-opening wrapper

Abstract

A wrapper that opens relatively quietly and wraps a sheetlike hygiene product provided on one side with an adhesive, said wrapper being based on a packaging material in web form and composed of a polymeric film comprising a) at least one heat-sealable layer based on a mixture of at least one C 2 or C 3 olefin homopolymer or copolymer and not more than 30% by weight, based on the total weight of the layer a), of polybutylene and b) optionally a layer of polyethylene having a density of 0.88-0.94 g/cm 3 ; the layer a), at least in those sections which face the regions of the hygiene product that are provided with the adhesive, has a release coating, and otherwise, at least in the sub-regions which are joined to form edge closures in the form of stripes or lines, has no release coating.

What is claimed is: 
     
       1. A wrapper with a low noise opening giving an energy equivalent permanent sound level LAeq≦60 dB for a sheet-like, single-side-adhesive hygienic product, which wrapper is formed of packaging material in web form and comprises a plastic film comprising:
 a) at least one heat-sealable layer comprising a mixture of at least one homopolymer of ethylene or propylene or of at least one olefin-copolymer selected from the group consisting of copolymers of ethylene and propylene with a predominant portion of propylene units and of copolymers of ethylene and of at least one α-olefin having 6 to 10 carbon atoms, and from 5 to 20% by weight, based on the total weight of the layer a), of polybutylene, and optionally conventional auxiliaries and 
 b) optionally a layer of polyethylene with a density of from 0.88 to 0.94 g/cm 3 , where the layer a) has a release coating in sections which face toward adhesive regions of the hygienic product and which thus is bonded releasably thereto, and otherwise has no release coating in wrapper regions bonded as edge closures in the form of strips or lines. 
 
     
     
       2. The wrapper as claimed in  claim 1 , wherein the plastic film comprises at least one layer b) which has at least on one surface a layer a). 
     
     
       3. The wrapper as claimed in  claim 1 , wherein the at least one layer a) or the film of at least one layer a) and b) is bonded to a nonwoven web as backing layer adjacent to a layer a) or to a layer b). 
     
     
       4. The wrapper as claimed in  claim 1 , wherein the polyethylene component of the layer b) comprises a mixture of low density polyethylene (LDPE) and linear low density polyethylene (LLDPE). 
     
     
       5. The wrapper as claimed in  claim 1 , wherein said at least one homopolymer of ethylene or propylene or said at least one olefin-copolymer in the at least one layer a) is a polyethylene (PE), a polypropylene, a mixture of LDPE and LLDPE, a mixture of LDPE and metallocene-catalyzed polyethylene (m-PE), a mixture of LDPE and very low density polyethylene (VLDPE), or a mixture of an ethylene-propylene-copolymer having a predominant proportion of propylene units and of LLDPE and optionally LDPE. 
     
     
       6. The wrapper as claimed in  claim 1 , wherein the at least one layer a) comprises color pigments and/or fillers as conventional auxiliaries. 
     
     
       7. The wrapper as claimed in  claim 1 , wherein the release coating is based on a cured polysiloxane coating. 
     
     
       8. The wrapper as claimed in  claim 1 , wherein the sections with the release coating on the at least one layer a) are arranged in the form of strips and/or correspond to an arrangement of the adhesive regions of the packaged hygienic product. 
     
     
       9. The wrapper as claimed in  claim 1 , wherein each of the edge closures of the wrapper in form of strips or of single or multiple lines, are durable bonds of the sections without any release coating on the at least one layer a), obtained by superposing the edges of these regions by folding two lateral sections of the packaging material toward one another and together with the hygienic product to be packaged and optionally with overlap on the same surface of the hygiene product during the packaging. 
     
     
       10. The wrapper as claimed in  claim 9 , wherein the durable bonds are obtained via heat-sealing, adhesion, crimping, or needling. 
     
     
       11. The wrapper as claimed in  claim 1 , wherein the wrapper is used for individual packaging of a single hygienic product. 
     
     
       12. The wrapper as claimed in  claim 11 , wherein the single packaged hygienic product is a sanitary napkin, a panty liner or a sheet-like incontinence product. 
     
     
       13. The wrapper as claimed in  claim 1 , wherein the plastic film is a matt, optionally colored, plastic film. 
     
     
       14. The wrapper as claimed in  claim 1 , wherein the wrapper is based on the plastic film. 
     
     
       15. A combination comprising (A) a sanitary napkin, panty liner, or sheet-like incontinence product packaged within (B) the wrapper as claimed in  claim 1 .